Improvement in exhaust apparatus for gas-works



PATENT OFFICE.

PHILIP W. MAcKENzIE, 0E BLAUvELTviLLE, NEw YORK.

IMPROVEMENT IN EXHAUST APPARATUS FIOR GAS-WORKS.

Specification forming part of Letters Patent No. 115,334, dated May 3Q, 1871;]

Rockland county, Stateof New York, have invented certain Improvements in Exhausting Apparatus, of which the following is a specication:

The first part of my invention relates to the combination of the governor D and its pipeconnection K, balancing and connecting lever Gr, and throttle-valve E with the tube A and jet L, for the purpose of `controlling the current of steam through said jet and tube by the i quantity of 'gas generated, and also preventing a vacuum in the retorts or other generatingapparatus. The second part of my invention relates tothe combination of the by-pass pipe. M, and automatic by-pass C, and stopvalves B B with tube A and jet L, for the pur! pose of passing the gas when the exhauster is not in operation, thelby-,pass valve opening as `the pressure comes` upon the retort side.

Figure 1 is an elevation .embodying my invention; Aand K` are sections 5 and B B, C, M, D, E, and G, side elevation.

Gefnemhlescripton.

i i A is the trumpet-shaped tube, through which i `the. gas and steam combined pass on to the condenserpuriiier,` and washers or scrubbers, as indicated by the arrows l 1 1. Lis a'jet of steam, passing," aslshown by the arrow 2, centrally through the tube A, for the purpose of exhausting or sucking the gas from the retorts or other generators, as indicated by the arrows 1 `1,andforcing it through tube A. D is the ordinary gas-governor, communicating through the pipe K with the main pipe below, and, with its inverted cup I, balancing and connectin g lever G; and counter-weight H operates the throttle-valve E, thereby controlling the quantity of steam passing through the jet L by the make of gas or by the varying pressure on the inverted cup, thus preventing a par-` .tial vacuum in the retorts, which may be dangerous. B B are ordinary stop-valves, and are always open when the exhauster is running, and onlyfclosed when the by-pass valve is foul or out of repair, as by closing them the by-pass valve can be removed and repaired. C is the by-pass valve. It is automatic and remains closed when the eXhauster is running; but when the exhauster fails or stops from any cause the by-pass flies open and allows the gas to pass freely through the pipe M, as indicated by the arrows 3 3.

I claim as my invention `1. The combination of the governing arrangement D, G, and H, constructed and 0perating substantially as shown and described,

with the jet-pipe L and tube A, for the purposes speciiied.

2. The combination of the by-pass pipe M and by-pass valve O with the steam-jet L and tube A, as arranged, and for the purpose de-` scribed.

PHILIP W. MACKENZIE. Witnesses: CHAs. W. IBELL,

CHAs. T. HARRIS. 

